#include <stdio.h>
#include "tool.h"

int main(int argc, char const *argv[])
{
    printf("add new api\n");

    printf("hello world\n");
    
    printf("7 + 8 = %d", add_num(7, 8));

    printf("15-7=%d\n", minus_num(15, 7));

    return 0;
}
